导电碳颗粒促进污泥厌氧消化及微生物种间电子传递的研究进展

A review on enhancement of sludge anaerobic digestion and microbial interspecies electron transfer induced by conductive carbon particles

摘要:

添加导电碳颗粒能够促进厌氧消化过程稳定性、底物降解率以及产沼气品质的同步提高。本文总结了以活性炭和生物炭为代表的导电碳颗粒对城市污泥厌氧消化的影响，探讨了导电碳颗粒促进城市污泥厌氧消化的机理，阐述了导电碳颗粒介导的微生物直接种间电子传递(Direct interspecies electron transfer，DIET)在强化污泥厌氧消化中的作用机制，分析了复杂厌氧消化体系中微生物DIET互营关系的研究现状，同时对导电碳颗粒的物理化学特性及其对污泥厌氧消化产甲烷的影响进行了分析，最后对未来导电碳颗粒促进城市污泥厌氧消化的研究进行了展望。

Abstract:

It was reported that the conductive carbon particles could improve anaerobic digestion process stability, substrate degradation rate and biogas quality. In this paper, the studies on the influences of conductive carbon particles, with activated carbon and biochar as the representatives, on sludge anaerobic digestion were summarized. The mechanisms of enhancement of anaerobic digestion by conductive carbon particles were discussed. The role of conductive carbon particles induced direct interspecies electron transfer (DIET) was illustrated. Then, the research progress of DIET in the complex anaerobic digestion system and the relationships between characteristics of conductive carbon particles and their effects on anaerobic digestion were analyzed. Finally, the future studies on promoting sludge anaerobic digestion with conductive carbon particles are prospected.